<div class="container-fluid">
    <div class="row">
        <div class="col-sm-2">
            <a href="/" class="list-group-item active">商品管理</a>

            <a href="/admin/product/" class="list-group-item">
                商品列表</a>
            <a href="/admin/product/productadd" class="list-group-item">
                增加商品</a>

            <a href="" class="list-group-item active">用户管理</a>

            <a href="/admin/user" class="list-group-item">
                用户列表</a>
        </div>